Large positive and negative lateral beam displacement in a guided-mode resonant filter
2008
In this paper, the lateral shift effect of a typical guided-mode resonant filter (GMRF) is fully analyzed. Large positive or negative lateral beam displacement can be achieved just by changing the period of the grating layer. This lateral shift phenomenon manifests some considerable virtues when compared with those similar effects that occur in multilayer stack and prism-coupled systems. Finally, a rigorous numerical method is developed to precisely simulate the spatial shift properties of the structure. This simple structure is easy to produce, and is very promising to be a cost-effective, high resolving power dispersive device.
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